The Red Light – Green Light System – A Simple Tool to Assess and Individualize Group Training

by Detric Smith, CSCS, NSCA-CPT
Personal Training Quarterly February 2020
Vol 6, Issue 4


This article introduces a potential solution for programming in the large group fitness setting with a wide variety of fitness levels.

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This article originally appeared in Personal Training Quarterly (PTQ)—a quarterly publication for NSCA Members designed specifically for the personal trainer. Discover easy-to-read, research-based articles that take your training knowledge further with Nutrition, Programming, and Personal Business Development columns in each quarterly, electronic issue. Read more articles from PTQ »



1. Conn, VS, Hafdahl, AR, and Brown, LM. Meta-analysis of quality-of-life outcomes from physical activity interventions. Nursing Research 58(3): 175-83, 2009.

2. Tumminello, N, Silvernail, J, and Cormack, B. The corrective exercise trap. Personal Training Quarterly 4(1): 6-15, 2017.

3. Pacheco, MM, Teixeira, LA, Franchini, E, and Takito, MY. Functional vs. strength training in adults: Specific needs define the best intervention. International Journal of Sports Physical Therapy 8(1): 34-43, 2013.

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Detric Smith, CSCS, NSCA-CPT

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